CDR105BNP-101KC Equivalent & Substitute Parts

Part Overview

The CDR105BNP-101KC is a 100 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 720 mA continuous current with a maximum DC resistance of 340mOhm. This component operates across the temperature range of -40°C to 100°C and is classified as obsolete. Due to its obsolete product status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

CDR105BNP-101KC

Sumida America Components Inc.In Stock: 3570CDR105BNP-101KC Datasheet

Current PartRFQ

CDRH105RNP-101NC

Sumida America Components Inc.In Stock: 1969CDRH105RNP-101NC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR105BNP-101KC is determined by the following critical parameters:

Inductance Value: Both the main part and substitute must maintain 100 µH inductance to ensure circuit functionality.

Shielding Configuration: The shielded design is mandatory to prevent electromagnetic interference in the target application.

Surface Mount Compatibility: Both parts utilize surface mount technology for PCB integration.

Operating Temperature Range: The substitute must support the full -40°C to 100°C operating window.

Current Handling Capability: The substitute current rating must equal or exceed the 720 mA requirement of the main part.

DC Resistance: The substitute DC resistance must not exceed the 340mOhm specification to maintain acceptable power dissipation characteristics.

Regulatory Compliance: Both parts must maintain ROHS3 compliance and MSL 1 rating for manufacturing and storage compatibility.

The CDRH105RNP-101NC meets these substitution criteria while offering improved current capacity (1.35 A) and lower DC resistance (253mOhm Max), making it a direct functional equivalent with enhanced performance margins.

Parameter Comparison

Engineering Selection Recommendations

The CDRH105RNP-101NC is qualified as a direct substitute for the CDR105BNP-101KC based on the following engineering criteria:

Functional Equivalence: Both inductors maintain identical 100 µH inductance values and shielded construction, ensuring equivalent electromagnetic performance in circuit applications.

Current Capacity: The substitute provides 1.35 A current rating, which exceeds the 720 mA requirement of the main part, offering additional design margin without circuit modification.

Resistance Performance: The substitute's 253 mOhm maximum DC resistance is lower than the main part's 340 mOhm specification, resulting in reduced power dissipation and improved thermal performance.

Compliance Status: Both components maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with current manufacturing processes and storage requirements.

Product Availability: The substitute is classified as Active with 1,875 pieces in stock, compared to the obsolete status of the main part with 3,560 pieces available. Selection of the active substitute ensures long-term supply chain continuity.

Physical Compatibility: The substitute footprint (10.20mm L x 10.00mm W x 5.10mm H) is comparable to the main part (10.00mm L x 9.00mm W x 5.50mm H), permitting direct PCB layout substitution with minimal design revision.

Frequently Asked Questions (FAQ)

Q: Can the CDRH105RNP-101NC replace the CDR105BNP-101KC in existing designs without circuit modification?

A: Yes. Both inductors maintain identical 100 µH inductance values, shielded construction, surface mount technology, and operating temperature range. The substitute's higher current rating (1.35 A vs. 720 mA) and lower DC resistance (253 mOhm vs. 340 mOhm) provide enhanced performance without requiring circuit changes.

Q: What is the impact of the inductance tolerance difference between the two parts?

A: The main part specifies ±10% tolerance while the substitute specifies ±30% tolerance. For applications requiring tighter inductance control, the main part's tolerance is superior. However, for most general-purpose filtering and energy storage applications, the substitute's ±30% tolerance remains acceptable within typical circuit design margins.

Q: Are there physical placement constraints due to the footprint difference?

A: The substitute dimensions (10.20mm L x 10.00mm W) are slightly larger than the main part (10.00mm L x 9.00mm W), and the height is slightly lower (5.10mm vs. 5.50mm). PCB layout verification is recommended to confirm adequate clearance in the target application, though the dimensional difference is minimal for most standard surface mount designs.

Q: Does the substitute's lower DC resistance affect circuit performance?

A: The substitute's 253 mOhm maximum DC resistance is lower than the main part's 340 mOhm specification. This reduction decreases resistive power dissipation and improves thermal performance, representing a beneficial change for circuit operation.

Q: What is the significance of the substitute being Active versus the main part being Obsolete?

A: The substitute's Active status ensures ongoing manufacturing and availability, supporting long-term production requirements. The main part's Obsolete classification indicates discontinued production, making the substitute the recommended choice for new designs and ongoing production support.

Q: Are both parts suitable for the same storage and handling conditions?

A: Yes. Both components maintain MSL 1 (Unlimited) moisture sensitivity rating and ROHS3 compliance, ensuring identical storage, handling, and manufacturing process compatibility.